By 2030, the Blue Economy will be worth $3 trillion. And the UK is well placed to capture a slice of this lucrative market, if it meets the challenges involved with innovation and ambition.

Popular tourist destination Kuta beach in Bali, Indonesia, is regularly covered in waste, most of it plastic that washes ashore during the rainy season. This picture was taken on February 15, 2016.
Wira Suryantala/Antara/ReutersMarch 8, 2017